Anti-hardening steam-water condenser for heat exchange in washing powder production

Abstract

The utility model discloses a heat exchange anti-hardening steam-water condenser for washing powder production, which comprises a shell and a plurality of core bodies arranged in the shell, high-temperature gas enters the shell from a gas inlet, flows to the surfaces of the core bodies, is changed into low-temperature gas after being subjected to heat exchange and cooling by the core bodies, and then flows out from a gas outlet; a powder flushing module is arranged between the core bodies, the powder flushing module comprises a converging pipe and a plurality of sub-pipes, the sub-pipes are communicated with the converging pipe, and a plurality of powder flushing nozzles are arranged on the sub-pipes; a water storage tank is arranged at the bottom of the shell, the bottom of the water storage tank is of a downward inclined plane structure, and the bottom of the water storage tank is inclined from one end of the gas outlet to one end of the gas inlet; the powder flushing module is arranged between the core bodies and matched with the integral finned tubes adopted by the core bodies, and the water storage tank is arranged at the bottom, so that particles and water flow to the water storage tank at the bottom along fins, blockage is not prone to occurring, and circulating cleaning can be achieved while heat exchange is conducted to prevent washing powder from hardening.

Description

Technical Field

[0001] The utility model belongs to the field of steam-water heat exchange, and in particular relates to an anti-caking steam-water condenser for heat exchange in washing powder production. Background Art

[0002] Washing powder drying waste gas mainly comes from the heating and drying steps in the production process. During this stage, raw materials or finished products generate steam during the drying process. These steam may contain a variety of volatile organic compounds (VOCs), such as alcohols, ketones, esters, etc., as well as other inorganic gases and dust. If these waste gases are directly discharged into the atmosphere without treatment, they will pose potential hazards to the environment and human health. In view of the characteristics of washing powder drying waste gas, it is necessary to select appropriate waste gas treatment technology for treatment. Common waste gas treatment technologies include pretreatment, absorption and adsorption, combustion and catalytic oxidation, biological treatment, and post-treatment.

[0003] During the production process, laundry detergent undergoes a drying process, leaving the exhaust gas containing significant amounts of water and detergent particles. The current drying exhaust gas output is 100,000 Nm³ / h, with a water content of 11 T / h. After cyclonic dust removal, the maximum particle content at this point is 120 g / m³. At a temperature of 80°C, the dew point is approximately 60°C. This produces a strong white mist and odor, leading to frequent complaints from surrounding residents. This project previously employed an energy-saving air-to-air heat exchanger and subsequent spray deodorization. The conventional plate-type air-to-air heat exchanger was prone to clogging. Particulate matter contained in the exhaust gas entered the circulation tank, causing an increase in foam and particles, which easily clogged the tank and disrupted the cooling system. This challenge was compounded by the difficulty in handling the detergent. Although soluble in water, low levels of water can easily cause it to harden and dissolve. Furthermore, the high-temperature, high-humidity exhaust gas entering the downstream plasma device could damage the equipment. Summary of the Invention

[0004] In response to the problems in the related technology, the utility model proposes a steam-water condenser for heat exchange in the production of washing powder to prevent solidification. A powder washing module is set between the core bodies, and the integral finned tubes used in the core bodies are matched with the water storage tank at the bottom, so that the particles and water flow along the fins to the water storage tank at the bottom. It is not easy to be blocked. It can be circulated and cleaned while exchanging heat to prevent the washing powder from solidifying.

[0005] The utility model is achieved in that:

[0006] A heat exchange and anti-condensation steam-water condenser for washing powder production comprises an outer shell and a plurality of cores disposed within the outer shell. A gas inlet is provided on one side of the outer shell, and a gas outlet is provided on the other side. The cores are plate-shaped and disposed parallel to the outer shell. The cores are finned tubes. A cooling water inlet is provided at the lower end of the cores, and a cooling water outlet is provided at the upper end of the cores. The cooling water inlet is connected to a water collecting pipe, and the cooling water outlet is connected to a drain pipe. Cooling water flows from the cooling water inlet to the finned tubes, flows out from the cooling water outlet, and is discharged through the drain pipe. High-temperature gas enters the outer shell through the gas inlet, flows to the surface of the cores, is cooled by heat exchange in the cores, becomes low-temperature gas, and then flows out through the gas outlet.

[0007] A powder mixing module is provided between the core bodies; the powder mixing module includes a confluence pipe and a plurality of sub-pipes, the sub-pipes are interconnected, the sub-pipes are parallel to each other, and the common plane where the confluence pipe and the sub-pipes are located is parallel to the plane where the core bodies are located; a plurality of powder mixing nozzles are provided on the sub-pipes, the powder mixing nozzles include large powder mixing nozzles and small powder mixing nozzles, and the powder mixing nozzles provided on two adjacent sub-pipes are all facing the core body and have different sizes; the powder mixing module is interconnected with an external water source through the confluence pipe, and water flows to each sub-pipe through the confluence pipe, and is sprayed toward the core body by the large powder mixing nozzle and / or small powder mixing nozzle on each sub-pipe;

[0008] A water storage tank is provided at the bottom of the shell, and a drain outlet is provided in the water storage tank, and the drain outlet is located on the side where the gas inlet is located; the bottom of the water storage tank is a downward inclined structure, tilted from one end of the gas outlet to one end of the gas inlet; the water sprayed by the powder making module falls into the water storage tank and is discharged through the drain outlet.

[0009] The high temperature gas entering from the gas inlet is about 62 degrees, and the temperature of the gas flowing out from the gas outlet after heat exchange through the finned tube is about 45 degrees.

[0010] The core adopts an integral fin tube with a large fin pitch of 5mm. Compared with spiral fin tubes, particles and water can flow along the fins to the water storage tank at the bottom more easily.

[0011] Preferably, a slot is provided on the side of the shell, a slide is provided at the bottom of the slot, and the core is inserted into the shell through the slot and the slide.

[0012] Specifically, the slideway is designed to facilitate the installation and maintenance of the core.

[0013] Preferably, the plate surface where the core is located and the straight line where the gas flows are perpendicular to each other.

[0014] Specifically, after the gas enters the gas inlet of the shell, it can directly contact the plate surface of the core from the front, and the cooling water circulates in the fin tubes to maximize the gas heat exchange effect.

[0015] Preferably, the water storage tank is parallel to the cross section of the plate surface where the core is located, and is a trapezoidal structure with a low middle and high sides.

[0016] Specifically, the water sprayed toward the core by the powder making module eventually falls into the water storage tank, which can collect the sprayed water and particulate matter. The structure with high sides and low middle can concentrate the falling water in the middle and discharge it from the drain outlet using the inclined structure.

[0017] Preferably, the upper end of the water storage tank is also covered with a screen.

[0018] Specifically, the screen is mainly used to reduce foam overflow and use the grid structure to absorb foam to prevent it from accumulating upwards, thereby improving the heat transfer efficiency of the heat exchanger fin tubes.

[0019] Preferably, the outer side of the water storage tank is further provided with reinforcing ribs at the bottom.

[0020] Specifically, the reinforcement ribs are mainly used to strengthen the stability of the overall structure of the water storage tank to prevent deformation caused by excessive water or long-term use, which affects the drainage effect.

[0021] Preferably, the large powder nozzle includes a large nozzle and a large punch, and the small powder nozzle includes a small nozzle and a small punch. The large punch and the small punch are respectively connected to the sub-tube, and the large nozzle and the large punch, and the small nozzle and the small punch are respectively matched and connected.

[0022] Specifically, the large nozzle and the small nozzle are both detachable. The flow rate and intensity of the water sprayed by the large nozzle and the small nozzle are different, and the cleaning effect is improved by setting them at intervals.

[0023] Preferably, the large powder nozzle and the small powder nozzle are both rotatable powder nozzles.

[0024] Specifically, the rotatable powder nozzle used can be a stainless steel industrial cleaning spray nozzle commonly found on the market, which can automatically rotate 360 ​​degrees and spray high-pressure water so that the powder module can fully cover the core body, thereby improving the spraying effect.

[0025] Preferably, the merging pipe is provided with a water inlet, which is located in the middle of the outer side of the shell. Water is introduced into the merging pipe through the water inlet and flows into the sub-pipes respectively.

[0026] Specifically, the powder making module mainly introduces water into the confluence pipe through the water inlet, distributes the water flow to different sub-pipes through the confluence pipe, and uses different powder making nozzles on the sub-pipes to spray water.

[0027] Preferably, a fixing rod is further provided at one end of the powder making module away from the water inlet, and the fixing rod is connected to the sub-pipe and is parallel to the merging pipe.

[0028] Specifically, the fixing rod mainly assists in stabilizing the overall structure of the powder dispensing module, and is connected to and fixed to the sub-tube at the side away from the merging tube.

[0029] Preferably, the housing is also provided with an inspection port.

[0030] Specifically, the inspection port is mainly used to check the internal conditions of the equipment and perform maintenance and repairs.

[0031] Compared with the prior art, the present invention achieves the following beneficial effects:

[0032] The utility model provides an anti-caking steam-water condenser for heat exchange in the production of washing powder, comprising an outer shell and a core body inside the outer shell, wherein the core body adopts an integral fin tube, a powder flushing module is arranged between the core bodies, and an inclined water storage tank is arranged at the bottom of the outer shell to collect sprayed water and particulate matter; the integral fin tube makes it easier for the particles and water to flow along the fins to the water storage tank at the bottom, and is not easy to be blocked; during the heat exchange process of the gas from 62 degrees to 45 degrees, condensed water is mixed with the washing powder and enters the water storage tank at the bottom, and the core body is sprayed with water in all directions through the powder flushing module, so as to realize cyclic cleaning and prevent the washing powder from being caking, and the cleaned water and particles can be quickly discharged through the water storage tank, thereby solving the problems of water content and particles in the exhaust gas, reducing white mist, and lowering the temperature to below 45 degrees to ensure the normal operation of subsequent plasma equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a side structural diagram of a steam-water condenser for preventing condensation in the production of washing powder and heat exchange according to an embodiment of the present utility model;

[0034] Figure 2 This is a schematic top view of a steam-water condenser for heat exchange in washing powder production according to an embodiment of the present invention;

[0035] Figure 3 This is a schematic side structural diagram of a powder dispensing module of a steam-water condenser for heat exchange and anti-condensation in washing powder production according to an embodiment of the present invention;

[0036] Figure 4 This is a schematic diagram of the top view of a powder dispensing module of a steam-water condenser for heat exchange and anti-condensation in the production of washing powder according to an embodiment of the present invention;

[0037] Figure 5 This is a second schematic diagram of the top view of the powder dispensing module of a heat exchange and anti-condensation steam-water condenser for washing powder production according to an embodiment of the present invention;

[0038] Figure 6 This is a side structural diagram of a water storage tank of a steam-water condenser for heat exchange in washing powder production according to an embodiment of the present utility model;

[0039] Figure 7 The present invention is a schematic cross-sectional view of a water storage tank of a steam-water condenser for heat exchange in washing powder production to prevent freezing.

[0040] Reference numerals:

[0041] 1. Housing; 11. Inspection port;

[0042] 2. Core; 21. Cooling water inlet; 22. Cooling water outlet;

[0043] 3. Powder mixing module; 31. Merging pipe; 32. Sub-pipe; 33. Powder mixing nozzle; 331. Large powder mixing nozzle; 3311. Large nozzle; 3312. Large punch; 332. Small powder mixing nozzle; 34. Water inlet; 35. Fixing rod;

[0044] 4. Water storage tank; 41. Drain outlet; 42. Reinforcement ribs. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0046] Example

[0047] like Figures 1 to 7 A heat exchange and anti-condensation steam-water condenser for washing powder production comprises a shell 1 and a plurality of cores 2 arranged in the shell 1. A gas inlet is provided on one side of the shell 1 and a gas outlet is provided on the other side. The cores 2 are plate-shaped and arranged parallel to the shell 1. The cores 2 are finned tubes. A cooling water inlet 21 is provided at the lower end of the cores 2, and a cooling water outlet 22 is provided at the upper end of the cores 2. The cooling water inlet is connected to a water collecting pipe, and the cooling water outlet 22 is connected to a drain pipe. Cooling water flows from the cooling water inlet 21 to the finned tubes, flows out from the cooling water outlet 22, and is discharged through the drain pipe. High-temperature gas enters the shell 1 through the gas inlet, flows to the surface of the core 2, and becomes low-temperature gas after heat exchange and cooling in the core 2, and then flows out through the gas outlet.

[0048] A powder making module 3 is provided between the core bodies 2 and the core bodies 2; the powder making module 3 includes a confluence pipe 31 and a plurality of sub-pipes 32, the sub-pipes 32 and the confluence pipe 31 are communicated with each other, the sub-pipes 32 and the sub-pipes 32 are parallel to each other, and the common plane where the confluence pipe 31 and the sub-pipes 32 are located is parallel to the plane where the core body 2 is located; a plurality of powder making nozzles 33 are provided on the sub-pipes 32, and the powder making nozzles 33 include a large powder making nozzle 331 and a small powder making nozzle 332, and the powder making nozzles 33 provided on two adjacent sub-pipes 32 are all facing the core body 2 and have different sizes; the powder making module 3 is communicated with an external water source through the confluence pipe 31, and water flows to each sub-pipe 32 through the confluence pipe 31, and is sprayed toward the core body 2 by the large powder making nozzle 331 and / or the small powder making nozzle 332 on each sub-pipe 32;

[0049] A water storage tank 4 is provided at the bottom of the shell 1, and a drain outlet 41 is provided in the water storage tank 4. The drain outlet 41 is located on the side where the gas inlet is located; the bottom of the water storage tank 4 is a downward inclined structure, tilted from one end of the gas outlet to one end of the gas inlet; the water sprayed by the powder making module 3 falls into the water storage tank 4 and is discharged through the drain outlet 41.

[0050] The high temperature gas entering from the gas inlet is about 62 degrees, and the temperature of the gas flowing out from the gas outlet after heat exchange through the finned tube is about 45 degrees.

[0051] The core 2 adopts an integral fin tube with a large fin pitch of 5 mm. Compared with the spiral fin tube, particles and water can flow along the fins to the water storage tank 4 at the bottom more easily.

[0052] A slot is provided on the side of the shell 1 , and a slide is provided at the bottom of the slot. The core 2 is inserted into the shell 1 through the slot and the slide.

[0053] The slideway is designed to facilitate the installation and maintenance of the core 2.

[0054] The plate surface where the core 2 is located is perpendicular to the straight line where the gas flows.

[0055] After the gas enters the gas inlet of the shell 1, it can directly contact the plate surface of the core 2 from the front, and the cooling water circulates in the fin tubes to maximize the gas heat exchange effect.

[0056] The water storage tank 4 is parallel to the cross section of the plate surface where the core 2 is located, and is a trapezoidal structure with a low middle and high sides.

[0057] The water sprayed from the powder making module 3 to the core 2 eventually falls into the water storage tank 4, which can collect the sprayed water and particulate matter. The structure with high sides and low middle can concentrate the falling water in the middle and discharge it from the drain outlet 41 using the inclined structure.

[0058] The upper end of the water storage tank 4 is also covered with a screen.

[0059] The screen is mainly used to reduce foam overflow and use the grid structure to absorb foam to prevent it from accumulating upwards, thereby improving the heat transfer efficiency of the heat exchanger fin tubes.

[0060] The outer side of the water storage tank 4 is provided with a reinforcing rib 42 at its bottom.

[0061] The reinforcing ribs 42 are mainly used to strengthen the stability of the overall structure of the water storage tank 4 to prevent deformation caused by excessive moisture or long-term use, which would affect the drainage effect.

[0062] The merging pipe 31 is provided with a water inlet 34 , which is located in the middle of the outer side of the housing 1 . Water is introduced into the merging pipe 31 through the water inlet 34 and flows into the sub-pipes 32 respectively.

[0063] The powder preparing module 3 mainly introduces water into the confluence pipe 31 through the water inlet 34 , distributes the water flow to different sub-pipes 32 through the confluence pipe 31 , and sprays water using different powder preparing nozzles 33 on the sub-pipes 32 .

[0064] A fixing rod 35 is further provided at one end of the powder preparing module 3 away from the water inlet 34 . The fixing rod 35 is connected to the sub-tube 32 and is parallel to the merging tube 31 .

[0065] The fixing rod 35 mainly assists in stabilizing the overall structure of the powder dispensing module 3 , and is connected to and fixed to the sub-tube 32 at a side away from the merging tube 31 .

[0066] The large powder nozzle 331 includes a large nozzle 3311 and a large punch 3312, and the small powder nozzle 332 includes a small nozzle and a small punch. The large punch 3312 and the small punch are respectively connected to the sub-tube 32, and the large nozzle 3311 and the large punch, and the small nozzle and the small punch are respectively matched and connected.

[0067] The large nozzle 3311 and the small nozzle are both detachable. The flow rate and intensity of the water sprayed by the large nozzle 3311 and the small nozzle are different, and the cleaning effect is improved by setting them at intervals.

[0068] The large powder dispensing nozzle 331 and the small powder dispensing nozzle 332 are both rotatable powder dispensing nozzles.

[0069] The rotatable powder spray nozzle used can be a common stainless steel industrial cleaning spray nozzle on the market, which can automatically rotate 360 ​​degrees and spray high-pressure water so that the powder spray module 3 can fully cover the core 2, thereby improving the spraying effect.

[0070] The housing 1 is further provided with an inspection port 11 .

[0071] The inspection port 11 is mainly used to check the internal condition of the equipment and perform maintenance and repair.

[0072] The utility model provides a steam-water condenser for heat exchange in the production of washing powder to prevent caking. By arranging a powder-making module 3 between the core bodies 2, and the core bodies 2 using integral finned tubes, particles and sprayed water can more easily flow to the bottom and are not easily clogged. An inclined water storage tank 4 is provided at the bottom to quickly discharge the cleaned water and particles, thereby preventing clogging of particles during the heat exchange process and preventing caking of the washing powder through circulating cleaning. The steam-water condenser provided in this embodiment has been tested and compared. For a heat exchanger without a spray cleaning device, the internal structure will be seriously clogged after the equipment has been in operation for 4 days. For an equipment with a spray cleaning device, all clogged particles can be cleaned in about 30 minutes. During operation, spray cleaning once a day can prevent clogging.

[0073] Based on the disclosure and teachings of the above description, those skilled in the art may also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and modifications and variations of the present invention should also fall within the scope of protection of the claims of the present invention. In addition, although certain specific terms are used in this description, these terms are for convenience only and do not constitute any limitation to the present invention.

Claims

1. A steam-water condenser for heat exchange in the production of washing powder to prevent condensation, comprising a shell and a plurality of cores arranged in the shell, wherein a gas inlet is provided on one side of the shell and a gas outlet is provided on the other side; the cores are plate-shaped and arranged in parallel in the shell, the cores are finned tubes, a cooling water inlet is provided at the lower end of the cores, a cooling water outlet is provided at the upper end of the cores, the cooling water inlet is connected to a water collecting pipe, and the cooling water outlet is connected to a drain pipe, cooling water flows from the cooling water inlet to the finned tubes, flows out from the cooling water outlet, and is discharged through the drain pipe; high-temperature gas enters the shell from the gas inlet, flows to the surface of the core, is cooled by heat exchange in the cores and becomes low-temperature gas, and then flows out from the gas outlet; the characteristics are: A powder dispensing module is provided between the core bodies; the powder dispensing module includes a converging pipe and a plurality of sub-pipes, the sub-pipes being interconnected and parallel to each other, and the common plane of the converging pipe and the sub-pipes being parallel to the plane of the core bodies; a plurality of powder dispensing nozzles are provided on the sub-pipes, the powder dispensing nozzles including a large powder dispensing nozzle and a small powder dispensing nozzle, and the powder dispensing nozzles provided on two adjacent sub-pipes are both facing the core body and are of different sizes; A water storage tank is provided at the bottom of the shell, and the water storage tank is provided with a drain outlet, and the drain outlet is located on the side where the gas inlet is located; the bottom of the water storage tank is a downward inclined structure, tilted from one end of the gas outlet to one end of the gas inlet; the water sprayed by the powder making module falls into the water storage tank and is discharged through the drain outlet.

2. The anti-condensation steam-water condenser for heat exchange in washing powder production according to claim 1, characterized in that: A slot is provided on the side of the shell, a slide is provided at the bottom of the slot, and the core is inserted into the shell through the slot and the slide.

3. The anti-condensation steam-water condenser for heat exchange in washing powder production according to claim 1, characterized in that: The plate surface where the core is located and the straight line where the gas flows are perpendicular to each other.

4. The anti-condensation steam-water condenser for heat exchange in washing powder production according to claim 1, characterized in that: The water storage tank is parallel to the cross section of the plate surface where the core is located, and is a trapezoidal structure with a low middle and high sides.

5. The anti-condensation steam-water condenser for heat exchange in washing powder production according to claim 4, characterized in that: The upper end of the water storage tank is also covered with a screen.

6. The anti-condensation steam-water condenser for heat exchange in washing powder production according to claim 4, characterized in that: The outer side of the water storage tank is provided with reinforcing ribs at the bottom.

7. The anti-condensation steam-water condenser for heat exchange in washing powder production according to claim 1, characterized in that: The large powder nozzle includes a large nozzle and a large punch, and the small powder nozzle includes a small nozzle and a small punch. The large punch and the small punch are respectively connected to the sub-tube, and the large nozzle and the large punch, and the small nozzle and the small punch are respectively matched and connected.

8. The anti-condensation steam-water condenser for heat exchange in washing powder production according to claim 7, characterized in that: The large powder dispensing nozzle and the small powder dispensing nozzle are both rotatable powder dispensing nozzles.

9. The anti-condensation steam-water condenser for heat exchange in washing powder production according to claim 1, characterized in that: The merging pipe is provided with a water inlet, which is located in the middle of the outer side of the shell. Water is introduced into the merging pipe through the water inlet and flows into the sub-pipes respectively.

10. The anti-condensation steam-water condenser for heat exchange in washing powder production according to claim 9, characterized in that: A fixing rod is further provided at one end of the powder making module away from the water inlet. The fixing rod is connected to the sub-pipe and is parallel to the merging pipe.

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